Version 0.1.0

LICENSE

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 BSD 3-Clause License
 
-Copyright (c) 2020, Fabien Chouteau
+Copyright (c) 2020, AdaCore
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

hal.gpr

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+project HAL is
+
+  for Source_Dirs use ("src");
+
+  for Library_Name use "hal";
+
+  for Object_Dir use "obj";
+  for Library_Dir use "lib";
+  for Library_Kind use "static";
+
+end HAL;

src/hal-audio.ads

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+------------------------------------------------------------------------------
+--                                                                          --
+--                     Copyright (C) 2015-2016, AdaCore                     --
+--                                                                          --
+--  Redistribution and use in source and binary forms, with or without      --
+--  modification, are permitted provided that the following conditions are  --
+--  met:                                                                    --
+--     1. Redistributions of source code must retain the above copyright    --
+--        notice, this list of conditions and the following disclaimer.     --
+--     2. Redistributions in binary form must reproduce the above copyright --
+--        notice, this list of conditions and the following disclaimer in   --
+--        the documentation and/or other materials provided with the        --
+--        distribution.                                                     --
+--     3. Neither the name of the copyright holder nor the names of its     --
+--        contributors may be used to endorse or promote products derived   --
+--        from this software without specific prior written permission.     --
+--                                                                          --
+--   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS    --
+--   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT      --
+--   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR  --
+--   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT   --
+--   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, --
+--   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT       --
+--   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,  --
+--   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY  --
+--   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT    --
+--   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE  --
+--   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.   --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Interfaces; use Interfaces;
+
+package HAL.Audio is
+
+   type Audio_Buffer is array (Natural range <>) of Integer_16
+     with Component_Size => 16, Alignment => 16;
+
+   type Audio_Volume is new Natural range 0 .. 100;
+
+   type Audio_Frequency is
+     (Audio_Freq_8kHz,
+      Audio_Freq_11kHz,
+      Audio_Freq_16kHz,
+      Audio_Freq_22kHz,
+      Audio_Freq_32kHz,
+      Audio_Freq_44kHz,
+      Audio_Freq_48kHz,
+      Audio_Freq_96kHz)
+     with Size => 32;
+   for Audio_Frequency use
+     (Audio_Freq_8kHz  =>  8_000,
+      Audio_Freq_11kHz => 11_025,
+      Audio_Freq_16kHz => 16_000,
+      Audio_Freq_22kHz => 22_050,
+      Audio_Freq_32kHz => 32_000,
+      Audio_Freq_44kHz => 44_100,
+      Audio_Freq_48kHz => 48_000,
+      Audio_Freq_96kHz => 96_000);
+
+   type Audio_Stream is limited interface;
+
+   procedure Set_Frequency (This      : in out Audio_Stream;
+                            Frequency : Audio_Frequency) is abstract;
+
+   procedure Transmit (This : in out Audio_Stream;
+                       Data : Audio_Buffer) is abstract;
+
+   procedure Receive (This : in out Audio_Stream;
+                      Data : out Audio_Buffer) is abstract;
+
+end HAL.Audio;